Question

Write a note on nitrogen.

Answer 1

1. The amount of nitrogen present in the air is about 78%
2. It is used to fill up food packages to extend their shelf life.
3. Liquid nitrogen is used to store living cells.
4. Plants need nitrogen for their growth.
5. We can see root nodules containing nitrogen in some plants.
6. Nowadays people use nitrogen gas to fill the tires of their vehicles.
7. Some compounds of nitrogen are used as explosives also.